Lua APA (7ú heag.)
Tierney, B. (1964). The crisis of Church and State, 1050-1300. Prentice-Holl.
Lua i Stíl Chicago (17ú heag.)
Tierney, Brian. The Crisis of Church and State, 1050-1300. New Jersey: Prentice-Holl, 1964.
Lua MLA (9ú heag.)
Tierney, Brian. The Crisis of Church and State, 1050-1300. Prentice-Holl, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.